Currently, the Division of Geology in the North Central Coast has explored the project "Investigate and evaluate environmental impact due to geohazards along the Highway 7- Ca river, Nghe An province and the Highway 8 - Ngan Pho river, Ha Tinh province". Results of the investigation show that the research area have geohazards in different locations including more than 549 landslides, 61 flash floods and 186 riverbank erosion, in which some large locations caused enormous damage to the community. The geohazards are mainly due to complex terrain and geology structure, human activities, as well as Ca and Rao Nay River faults. To prevent and mitigate damage of these geohazards, some measures must be carried out such as to raise awareness of citizens in prevention of geological disasters, and to adjust distribution of population and building infrastructure appropriate to geological features.